Mailing tray



FIG. 1 is a top plan view of a mailing tray showing my new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top perspective view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a rear elevation view thereof; and,

FIG. 8 is a bottom perspective view thereof.

The broken lines shown represent unclaimed subject matter and form nopart of the claimed design.

CLAIM The ornamental design for a mailing tray, as shown and described.